Locking device for double hung window



Feb. 1, 1966 H. 1.. FOSTER LOCKING DEVICE FOR DOUBLE HUNG WINDOW FiledSept. 30, 1965 Fig. 2*

INVENTOR Herbert L. Foster -JAA Patented Feb. 1, 1966 [ice 3 v s LOCI ING DEVICE FOR DOUBLE HUNG WINDOW Herbert L. Foster, 5839 NE; 28th Ave.,Portland, Greg. Filed Sept. 30, 1963, Ser. No. 312,547 6 Claims. (Cl.292265) This invention broadly relates to building construction and,more particularly, to buildings having windows of the double hung typethough the invention can no doubt be modified for adaptation to othertypes of windows as will be hereinafter discussed.

.While windows are one of the most necessary parts of any building, withthe possible exception of warehouses and garages, too little attentionhas been paid to devices for locking them at a predetermined opening. Itis undoubtedly due to this that there has been an untold number ofburglaries, particularly in private homes.

It is therefore the principal object of this invention to provide alocking device for double hung windows, one of the most common type ofwindows used in home construction, a locking device that is simplicityitself by reason of its lack of complicated mechanism.

Another equally important object of this invention is to provide fordouble hung windows a locking device that can be installed by anyonehaving ordinary household tools.

Another object of this invention is to provide a locking device fordouble hung windows that can readily be mounted on either a wood ormetal side jamb of a window.

Another object of this invention is to provide a locking device fordouble hung windows that has only eight parts, including all mountinghardware.

Another object of this invention is to provide a locking device that canbe adapted to any size of double hung windows.

Still another object of this invention is" to provide a locking devicefor double hung windows that can be adjusted to permit their opening toone of a number of predetermined distances from the top of the window.

All of the above noted and other attendant objects and advantages ofthis invention will become more readily apparent from the detaileddescription thereof which follows, reference being bad to theaccompanying drawing in which FIGURE 1 is a perspective sectional viewof this invention mounted on the side jamb of a window and taken alongline 1-1 of FIGURE 2 as viewed in the direction indicated by the arrows.

FIGURE 2 is a front view of a portion of a typical window as viewed fromthe inside of the building with this invention mounted on one of theside jambs.

FIGURE 3 is an end view of FIGURE 1 as viewed in the direction indicatedby the arrowed line and numeral 3 on FIGURE 1.

FIGURE 4 is an exploded perspective view of this invention ready forassembly on a side jamb of a window, with attachment nails not shown inthis View.

FIGURE 5 is a prespective view of this invention completely assembled.

FIGURE 6 is a perspective view of locking pin hole locating templateused to mount this invention on the side frame.

FIGURE 7 is a perspective view of the two locking pins used in lockingthis invention to side frame of a window.

In the several views of the drawing like reference numerals indicatelike parts.

The invention consists of a track insert bar 10 that is formed fromround 'bar metal stock into a U-shaped member when viewed from the frontand which embodies a vertically disposed member 11 having a plurality ofvertically spaced openings 12, each one of which is horizontallydisposed for the reception of the extension bar mounting screws 13. Eachend 14 of the aforesaid vertically dis posed member 11 is formed atright angle thereto into a horizontally disposed member 15 that has aplurality of parallel openings 16 in the end thereof for the recep= tionof the locking pins 17. g

It will be noted from eXamination of the drawing that each horizontallydisposed member 15 is provided with a joggle 18 in order that the devicewill fit around but not touch the sash cord 19 of the side jamb 20 of awindow.

A vertically disposed extension bar 21 of the same material andcross-sectional size as that of the already described track insert barIt) has itsupper end 22 formed at an angle and terminating in a rightangle horizontal member 23 in order to rest against the underside of thetop rail 24 of the upper sash when the Window is lowered to apredetermined distance to which it is locked by this invention. Theaforesaid extension bar 21 is provided with a plurality of horizontallydisposed, vertically spaced openings 25 that are in alignment with theopenings 12 in the aforesaid vertically disposed member 11 as thealready mentioned mounting screws 13 must naturally go through thisvertically disposed extension bar 21 as well as through the verticallydisposed member 11 against which it rests when this invention is fullyassembled as shown in FIGURE 5 of the drawing. A wing nut- 26 is screwedonto the end of each one of the aforesaid mounting screws- 13 when thisinvention is completely secured and assembled on a double hungwindow asshown in FIGURE 2 of the drawing.

The shape of the various parts that go to make up this invention has nowbeen described and its method of assembly is relatively simple. Afterdeciding exactly where this invention is to be mounted on the side jambof a double hung window, the template 27 (FIGURE 6) which is an L-shapedmember, is placed on the aforesaid side jamb 26 and checked by insertingthe upper one of the horizontally disposed members 15 into the opening28 in leg 29 while the point of a pencil is inserted into the opening 36of leg31 to mark exactly where the hole for locking pin 17 is to bedrilled in order that it will pass through one of the openings 16 in theaforesaid horizontally disposed member 15 after a suitable recess hasbeen made in the inside stop 32 of the side jamb 20. The necessaryrecess is now made in the inside stop 32 for the lower one of theaforesaid horizontally disposed members 15 in exactly the same way ashas just been described for the opening for the upper horizontallydisposed member 15.

It will be noted from examination of FIGURE 2 of the drawing, that thisinvention is so mounted on the sidejamb 20 as to allow 'a reasonableamount of space between the inside of the aforesaid vertically disposedmember 11 and the side jamb 20.

This invention of a locking device for double hung windows may, ofcourse, be mounted anywhere on the side jamb 20 so as to permit thewindow to be lowered to any predetermined distance down from the top andprevent the lower sash from being raised more than a predeterminedamount.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of the invention, as defined in theappended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. A locking device for double hung windows comprising a pair of barsadjustably secured together and mounted on the side jamb of a doublehung window, the upper end of one of the said bars being adapted to restagainst the underside of the top rail of the upper sash of said windowwhen said sash is lowered to a predetermined distance, the lower ends ofsaid bars adapted to rest against the upper side of the upper rail ofthe lower sash when said lower sash is raised a predetermined distance,whereby each sash is locked against opening more than its predetermineddistance.

2. A locking device for double hung windows comprising a bar that isU-shaped when viewed from the side and an extension bar adjustablysecured to the first mentioned bar which is mounted on the side jamb ofa double hung window, the said extension bar having its upper endadapted to" rest against the underside of the top rail of the upper sashof a window when said sash is lowered to a predetermined distance,thelower portion of said U-shaped bar adapted to rest against the upperside of the upper rail of the lower sash when said lower sash is raiseda predetermined distance, whereby each sash is locked against openingmore than its predetermined distance.

3. A locking device for double hung windows comprising a bar that isU-shaped when viewed from the side and the horizontally disposed membersof the U-shaped bar having a joggle therein that permits the mounting ofthe said locking device to the side jamb of a double hung window withoutinterfering with the sash cord and an extension bar adjustably securedto the first mentioned bar, the said extension bar having its upper endadapted to rest against the underside of the top rail of the upper sashof a window when said sash is lowered to a predetermined distance, thelower portion of said U-shaped bar adapted to rest against the upperside of the upper rail of the lower sash when said lower sash is raiseda predetermined distance, whereby each sash is locked against openingmore than its predetermined distance.

4. A locking device for double hung windows comprising a bar that isU-shaped when viewed from the side and the horizontally disposed membersof the U-shaped bar having a joggle therein that permits the mounting ofthe said locking device to the side jamb of a double hung window withoutinterfering with the sash cord, and an extension bar adjustably securedto the first mentioned bar, the said extension bar having its upper endformed at an angle and terminating in a right angle horizontal memberadapted torest against the underside of the top rail of the upper sashof a window when said sash is lowered to a predetermined distance, thelower portion of said U-shaped bar'adapted to rest against the upperside of the upper rail of thelower sash when said lower sash is raised apredetermined distance, whereby each sash is locked against opening morethan its predetermined distance.

5. A locking device for double hung windows comprising a bar that isU-shaped when viewed from the side and the horizontally disposed membersof the U-shaped bar having a joggle therein that permits the mountingvof the said locking device to the side jamb of a double hung windowwithout interfering with the sash cord and an extension bar adjustablysecured to the first mentioned bar by means of a pair of extension barmounting screws having a wing nut andthe said extension bar having itsupper end formed at an angle and terminating in a right angle horizontalmember adapted to rest against the underf side of the top rail of theupper sash of a window when said sash is lowered to a predetermineddistance, the lower portion of said U-shaped bar adapted to rest againstthe upper side of the upper rail of the lower sash when said lower sashis raised a predetermined distance, whereby each sash is locked againstopening more than its predetermined distance.

6. A locking device for double hung windows comprising a bar that isU-shaped when viewed from the side and the horizontally disposed membersof the U-shaped bar having a joggle therein that permits the mounting ofthe said locking device to the side jamb of a double hung window bymeans of a pair of locking pins without interfering with the sash cordand an extension bar adjustably secured to the first mentioned bar bymeans of a pair of extension bar mounting screws having wing nuts andthe said extension bar having its upper end formed at an angle andterminating in a right angle horizontal member adapted to rest againstthe underside of the top rail of the upper sash of a window when saidsash is lowered to a predetermined distance, the lower portion of saidU-shaped bar adapted to rest against the upper side of the upper rail ofthe lower sash when said lower sash is raised a predetermined distance,whereby each sash is locked against opening more than its predetermineddistance. 1

JOSEPH D. SEERS, Primary Examiner.

M. HENSON WOOD, 111., Examiner.

R. E. MOORE, Assistant Examiner.

1. A LOCKING DEVICE FOR DOUBLE HUNG WINDOWS COMPRISING A PAIR OF BARSADJUSTABLY SECURED TOGETHER AND MOUNTED ON THE SIDE JAMB OF A DOUBLEHUNG WINDOW, THE UPPER END OF ONE OF THE SAID BARS BEING ADAPTED TO RESTAGAINST THE UNDERSIDE OF THE TOP RAIL OF THE UPPER SASH TO SAID WINDOWWHEN SAID SASH IS LOWERED TO A PREDETERMINED DISTANCE, THE LOWER ENDS OFSAID BARS ADAPTED TO REST AGAINST THE UPPER SIDE OF THE UPPER RAIL OFTHE LOWER SASH WHEN SAID LOWER SASH IS RAISED A PREDETERMINED DISTANCE,WHEREBY EACH SASH IS LOCKED AGAINST OPENING MORE THAN ITS PREDETERMINEDDISTANCE.